Precision Predictions for Charged Higgs Boson Decays in the Real and Complex NMSSM

TL;DR

This paper computes full next-to-leading order electroweak and QCD corrections to charged Higgs boson decays in the NMSSM, analyzing their impact on branching ratios and CP violation effects within experimental constraints.

Contribution

It provides the first comprehensive NLO correction calculations for charged Higgs decays in the NMSSM, including CP-violating effects, and implements them in the NMSSMCALCEW code.

Findings

NLO corrections significantly affect decay widths and branching ratios.

CP violation introduces measurable effects in decay processes.

Corrections are consistent with current experimental constraints.

Abstract

We present the full next-to-leading order (NLO) supersymmetric (SUSY) electroweak and SUSY-QCD corrections to the decay widths of the charged Higgs boson decays into on-shell final states in the framework of the CP-conserving and CP-violating Next-to-Minimal Supersymmetric Model (NMSSM). The newly calculated corrections have been implemented in the code NMSSMCALCEW. In these proceedings, we discuss the impact of the NLO corrections on the charged Higgs boson branching ratios in a wide range of the parameter space that is still compatible with the experimental constraints. We also investigate the effect of CP violation in these corrections.